30
Lenovo B550 Hardware Maintenance Manual
Table 2. Status indicators (continued)
Indicator
Meaning
3
Power on
White:
System is enabled.
Blinking white:
System is in sleep mode.
Off:
System is in hibernate mode or shut down.
4
Battery status
Blinking amber:
(500ms off/ 1s on)
The remaining power of the battery is less than 5%
of its capacity.
Blinking amber:
(100ms off/ 3.2s on)
The battery is being charged with the remaining
power between 5% and 20% of its capacity.
Amber:
The computer is operating on battery power with
the remaining power between 5% and 20% of its
capacity.
Blinking white:
The battery is being charged with the remaining
power between 20% and 80% of its capacity.
White:
The remaining power of the battery is more than
80% of its capacity, or the computer is operating on
battery power with the remaining power between
20% and 80% of its capacity.
5
Wireless
status
White:
Any one of the wireless devices (WLAN/Bluetooth/
WWAN) is enabled.
Off:
All the wireless devices (WLAN/Bluetooth/WWAN)
are disabled.
6
Drive in use
White:
Data is being read from or written to the hard disk
drive or the optical disk drive. When this indicator
is on, do not put the computer into standby mode
or turn off the computer.
Note:
Do not move the system while the white drive-in-use
light is on. Sudden physical shock could cause drive errors.
